Just heard about this; pls. delete if it's a dupe.
http://www.chron.com/cs/CDA/ssistory.mpl/world/3323020CAMP BUCCA, IRAQ - In the darkest hours before dawn, groups of 10 detainees toiled 15 feet beneath Compound 5 of America's largest prison in Iraq. The men worked in five-minute shifts, digging with shovels fashioned from tent poles and hauling the dirt to the surface with five-gallon water jugs tethered to 200 feet of rope. They bagged it in sacks that had been used to deliver their bread rations and spread it surreptitiously across a soccer field where fellow inmates churned it during daily matches, guards and detainees recalled.
The 105th Military Police Battalion, charged with running Camp Bucca in the scorching desert of southernmost Iraq, knew something was amiss: Undetectable to the naked eye, the field's changing color was picked up by satellite imagery. The excavated dirt was also clogging the showers and two dozen portable toilets. The dirt was showing up under the floorboards of tents; some guards sensed that the floor itself seemed to be rising. Mysteriously, water use in the compound had spiked.
Hours before the planned prison break on March 24, an informant tipped off the Americans, who then drove a bulldozer across Compound 5. What they discovered was breathtaking: a fully completed tunnel that stretched 357 feet, longer than a football field. Inside were flashlights built from radio diodes and five larger spaces to provide ventilation. The tunnel's walls were as smooth and strong as concrete, sculpted with water and, the Americans believe, milk. The exit, beyond the compound's fence, was camouflaged with sand-colored cardboard. It opened into a partially concealed trench that would lead the detainees to freedom.
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